1. Product introduction

Gas chromatograph refers to a chromatographic analysis instrument that uses gas as the mobile phase. Mainly used in: environmental protection, food fermentation, petroleum processing, organic chemistry and other industries analysis and research.

2. Product parameters

1. Oven temperature control index

● Temperature control area: 6 channels
● Temperature control range: 8℃～399℃ above room temperature, increment: 1℃, accuracy: ±0.1℃
● Program temperature: 6 steps
● Temperature rise Rate: 0.1～40℃/min
●Temperature fluctuation: not more than ±0.1℃
●Cooling speed: from 300℃ to 50℃ less than 5min 

●Automatic protection function of column oven

2.temperature

●More than one independently temperature-controlled capillary column sampling unit.
●High temperature: 400℃;
●Type of injection unit
●Split/splitless injection port; Standard equipped with carrier gas saving mode, which can effectively save the consumption of carrier gas; Split ratio setting range: 4000:1.
3. Sampling method

● 16-bit liquid automatic sampler of the same brand
● Sampling repeatability: ±0.01ul

4. Gas circuit control unit

● Electronic flow control system for carrier gas, which can realize program boost, constant temperature, constant current and constant flow Pressure and other functions
●Hydrogen and air can use mechanical valve or electronic flow control system;

5. Detector unit

●Can install more than two independent temperature-controlled detectors at the same time, automatic ignition.

6. Pressure and flow control indicators

● Pressure and flow measurement: Pointer pressure gauge method, electronic pressure flow method
● Full electronic gas pressure and flow measurement system: single module Large measurement channel: 16 channels
● EPC, EFC working mode: 3 kinds; constant current mode, constant pressure mode, shunt mode
● EPC, EFC working gas: 4 kinds; nitrogen, hydrogen, air, helium
● EPC, EFC process rise: 4 steps
● EPC, EFC control range: pressure: 0～0.6Kpa; flow 0～100sccm or 0～500sccm (air);
● EPC, EFC control accuracy: pressure 0.01Kpa; flow 0.01sccm;
● Pressure sensor:
accuracy: <± of full scale 2%
repeatability: <±0.05 KPa
Temperature coefficient: <±0.01 KPa/°C
Range: 0～0.3KPa or 0～0.6KPa;
● Flow sensor:
Accuracy: <±5% of full scale
Repeatability: <±0.5% (full scale)
Range: 0～500sccm

7. Detector technical indicators:

hydrogen flame ionization detector (FID)
● Detection limit: M≤3.5×10-12g/s, sample: C16;
● Noise: ≤5×10-13A
● Drift: ≤2×10-13A/30min
● Linear range: 107
thermal conductivity detector (TCD)
● Sensitivity: S≥4000mV.ml/mg(C6H6) (can be amplified 1, 2, 4 , 8 times)
● Noise: ≤10μV
● Baseline drift: ≤30μv/30min
● Linear range: 104
electron capture detector (ECD)
● Detection limit: ≤1×10-14g/s (-666)
● Noise: ≤15μV
● Baseline drift: ≤20μv/30min
● Linear range: 104
● Radiation source: Ni63
flame photometric detector (FPD)
● Detection limit: Mt≤2×10-11g/s (in methyl parathion
● Noise: Rn≤50uv; ●
Baseline drift: Rd≤20uv/30min;
●Linear range: ≥105
nitrogen phosphorus detector (NPD)
●Mt≤8×10-13g/s (azobenzene); ≤5×10-13g/s (malathion);
● Noise: Rn≤2×10-12A;
● Baseline drift: Rd≤2×10-13A/30min;
● Linear range: ≥105

3.product features

1. Using 10/100M adaptive Internet communication technology, it can form a local area network with high communication efficiency; realize long-distance data transmission; 1 chromatograph can be connected to 3 computers; 1 computer can be connected to multiple chromatographs at the same time station) and control the operation.

2. Dual-channel original reverse-controlled chromatography operation software workstation, which can be upgraded online for free. It supports easy recall of projects, and one-click recall of instrument control parameter information in the spectrum. And support project grouping, support polynomial calculation function, primary curve correction (y=kx+b), quadratic curve correction (y=ax2+bx+c), cubic curve correction (y=ax3+bx2+cx+d), Improves linearity accuracy for non-linear samples.

3. It supports various injection methods such as automatic sampler, automatic headspace sampler, and pyrolysis sampler, and realizes real unattended online analysis through network transmission and control.

4. Adopt new automatic flow/pressure control EPC, EFC technology to digitally control the parameters (flow and pressure) of all gas paths. The working modes are divided into three types: constant current, constant pressure and shunt. It can carry out 4-step program boosting, the pressure accuracy is 0.01KPa, and the flow rate is 0.01sccm.

5. It has a rapid heating and cooling structure, which can achieve a heating rate of 80°C/min; it can work at room temperature; under the condition of liquid nitrogen, it supports a wide range of temperature control from -80°C to 450°C.

6. The automatic control technology of intelligent hydrogen and air is adopted, and the solenoid valve automatically switches the gas, so as to realize the automatic ignition function in the true sense.

7. It has 4 external event functions, supports multi-valve switching, and realizes the application of multi-dimensional chromatography system.

8. The advanced gas flow process can realize the simultaneous use of hydrogen flame detector and thermal conductivity detector, and can also realize the simultaneous use of dual thermal conductivity detectors.

9. The new digital integrated circuit devices and technologies in the world are adopted, so that the instrument has high control accuracy (temperature control can reach 0.1 ℃), and the stability and reliability of its performance can be comparable to that of imported instruments.

10. The advanced double automatic back door function can automatically adjust the opening and closing angle of the door with the temperature change.

11. The column temperature box is equipped with a dual-air duct alternating cold and heat system, and the box body is protected by a special material.

12. The instrument adopts a 5.7-inch color screen display, which simultaneously displays two channels of spectra, and can be equipped with a touch screen.